Exchange greetings

The Prophet (sal Allahu alaihi wa sallam) said, ”O people, exchange greetings of peace (i.e., say: As-Salamu ‘Alaikum to one another), feed people, strengthen the ties of kinship, and be in prayer when others are asleep, you will enter Jannah in peace.”

[Sunan At-Tirmidhi]

Commentary:

All these habits and practices mentioned in the above Hadith are indispensable to a believer because each one of them leads to Jannah with the first people to enter it without being punished in Hell first.